There's no honour among thieves and whatnot; advertisers do not trust publishers to report data or log impressions truthfully without money-signs-on-bags runnin

There's no honour among thieves and whatnot; advertisers do not trust publishers to report data or log impressions truthfully without money-signs-on-bags running away with stolen money. Which, honestly, will 100% happen, considering the sheer amount of weird "adsense click fraud rings" you can find on the shitty, awful part of the internet, like SEO forums.